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                <h1 id="项目初始化"><a href="#项目初始化" class="headerlink" title="项目初始化"></a>项目初始化</h1><p>从零开始实现后台管理系统，主要技术：Spring Boot、Spring Security、MySQL、Druid、Redis，后续会扩展业务转为微服务项目。</p>
<h2 id="创建项目"><a href="#创建项目" class="headerlink" title="创建项目"></a>创建项目</h2><p>1.使用Idea创建一个Spring Boot项目，点击File -&gt; New -&gt; Project…。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/1.png" alt="1"></p>
<p>2.打开的New Project界面，选择Spring Initializr，点击 Next。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/2.png" alt="2"></p>
<p>3.填写Group等信息，Java Version选适合的，点击Next。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/3.png" alt="3"></p>
<p>4.左侧菜单Developer Tools中勾选Spring Boot DevTools、Lombok。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/4.png" alt="4"></p>
<p>5.左侧菜单Web中勾选Spring Web。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/5.png" alt="5"></p>
<p>6.左侧菜单SQL中勾选Spring Data Jpa、MySQL Driver，点击Next。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/6.png" alt="6"></p>
<p>7.填写项目名称和存储目录等，点击Finish。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/7.png" alt="7"></p>
<p>8.项目创建完成。</p>
<h3 id="配置多环境"><a href="#配置多环境" class="headerlink" title="配置多环境"></a>配置多环境</h3><p>将项目的src\main\resources\application.peoperties文件改为application.yml，然后创建application-dev.yml配置文件，在application.yml指定使用开发环境配置：</p>
<pre class="line-numbers language-yml" data-language="yml"><code class="language-yml">spring:
  profiles:
  	# 使用dev开发环境
    active: dev<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>

<p>通过切换active的值即可切换使用不同环境配置（dev、prod、test…）。</p>
<h3 id="配置JPA"><a href="#配置JPA" class="headerlink" title="配置JPA"></a>配置JPA</h3><p>在application.yml配置文件中进行JPA相关的配置：</p>
<pre class="line-numbers language-yml" data-language="yml"><code class="language-yml">spring:
  #配置 Jpa
  jpa:
  	# 开启SQL打印（建议开发环境）
    show-sql: true
    hibernate:
      ddl-auto: update
    properties:
      hibernate:
        dialect: org.hibernate.dialect.MySQL5InnoDBDialect
        # 开启SQL格式化
        format_sql: true<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h3 id="配置开发热部署"><a href="#配置开发热部署" class="headerlink" title="配置开发热部署"></a>配置开发热部署</h3><p>创建项目时引入devtools主要是方便开发，开发时可以监控程序的变化，然后进行自动重新启动。引入后还需要做一些配置才能达到热启动的目的。</p>
<p>在POM文件引入依赖,并在最后的maven插件中添加如下内容：</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencys</span><span class="token punctuation">&gt;</span></span>
	<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span>
    	<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.springframework.boot<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>spring-boot-tools<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>optional</span><span class="token punctuation">&gt;</span></span>true<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>optional</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencys</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>build</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>plugins</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>plugin</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.springframework.boot<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>spring-boot-maven-plugin<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>configuration</span><span class="token punctuation">&gt;</span></span>
                <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>fork</span><span class="token punctuation">&gt;</span></span>true<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>fork</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>configuration</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>plugin</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>plugins</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>build</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>点击IDEA的“File-&gt;Settings”，左侧点击选中“Compiler”，右侧勾选“Build Project automatically”。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/r1.png" alt="r1"></p>
<p>使用快捷键“ctrl + shift + alt + /”，选择Registry，勾选 compiler automake allow when app running。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/r2.png" alt="r2"></p>
<p>在启动类的配置中，Running Application Update Policies两项都选择Update classes and resources。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/9.png" alt="9"></p>
<p>application.yml中控制是否开启热部署配置：</p>
<pre class="line-numbers language-yaml" data-language="yaml"><code class="language-yaml"><span class="token comment"># Spring配置</span>
<span class="token key atrule">spring</span><span class="token punctuation">:</span>
  <span class="token key atrule">devtools</span><span class="token punctuation">:</span>
    <span class="token key atrule">restart</span><span class="token punctuation">:</span>
      <span class="token comment"># 热部署开关</span>
      <span class="token key atrule">enabled</span><span class="token punctuation">:</span> <span class="token boolean important">true</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>完整的application.yml配置：</p>
<pre class="line-numbers language-yaml" data-language="yaml"><code class="language-yaml"><span class="token key atrule">spring</span><span class="token punctuation">:</span>
  <span class="token key atrule">profiles</span><span class="token punctuation">:</span>
    <span class="token key atrule">active</span><span class="token punctuation">:</span> dev

  <span class="token comment"># 配置Jpa</span>
  <span class="token key atrule">jpa</span><span class="token punctuation">:</span>
    <span class="token comment"># 开启SQL打印（建议开发环境）</span>
    <span class="token key atrule">show-sql</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
    <span class="token key atrule">hibernate</span><span class="token punctuation">:</span>
      <span class="token key atrule">ddl-auto</span><span class="token punctuation">:</span> update
    <span class="token key atrule">properties</span><span class="token punctuation">:</span>
      <span class="token key atrule">hibernate</span><span class="token punctuation">:</span>
        <span class="token key atrule">dialect</span><span class="token punctuation">:</span> org.hibernate.dialect.MySQL5InnoDBDialect
        <span class="token comment"># 开启SQL格式化</span>
        <span class="token key atrule">format_sql</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
  <span class="token key atrule">devtools</span><span class="token punctuation">:</span>
    <span class="token key atrule">restart</span><span class="token punctuation">:</span>
      <span class="token comment"># 热部署开关</span>
      <span class="token key atrule">enabled</span><span class="token punctuation">:</span> <span class="token boolean important">true</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>至此，热部署配置完成。</p>
<h3 id="引入阿里Druid连接池"><a href="#引入阿里Druid连接池" class="headerlink" title="引入阿里Druid连接池"></a>引入阿里Druid连接池</h3><p>在POM文件中引入Druid数据连接池依赖：</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- druid数据源驱动 --&gt;</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>com.alibaba<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>druid-spring-boot-starter<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>1.1.24<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>可以改为将版本号定义在properties中，POM文件内容：</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>properties</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>druid.version</span><span class="token punctuation">&gt;</span></span>1.1.24<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>druid.version</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>properties</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencies</span><span class="token punctuation">&gt;</span></span>
    <span class="token comment">&lt;!-- druid数据源驱动 --&gt;</span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>com.alibaba<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>druid-spring-boot-starter<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>${druid.version}<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependencies</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>此时启动项目，可以在控制台看到，数据库连接池已经更改为Druid。</p>
<h3 id="配置数据库密码加密"><a href="#配置数据库密码加密" class="headerlink" title="配置数据库密码加密"></a>配置数据库密码加密</h3><p>引用Druid官方原文：数据库密码直接写在配置中，对运维安全来说，是一个很大的挑战。Druid为此提供一种数据库密码加密的手段。</p>
<p>具体步骤如下：</p>
<ul>
<li><p>展开项目的库目录，找到druid-1.1.24.jar包。</p>
</li>
<li><p>选中该jar包，右键菜单中点击“Open in Terminal”。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/8.png" alt="8"></p>
</li>
<li><p>在打开的终端中执行密码加密命令（假设数据库密码为：123456，以实际密码为准进行更改）。</p>
<pre class="line-numbers language-none"><code class="language-none">java -cp druid-1.1.24.jar com.alibaba.druid.filter.config.ConfigTools 123456。<span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre></li>
<li><p>执行后会生成私钥privateKey、公钥publicKey和加密后的密码password。</p>
<pre class="line-numbers language-none"><code class="language-none">privateKey:MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAv7vha+kgGat73s534lyLpw+nCzYkwA/j2KBft2Q4/hnBWOy9SxZR/UOhCzwk67RlOJQ4nwcakMYbgrAFgFw+CQIDAQABAkEAuZiV0c5dq1uK
0ZeNBspMyM9nBHxJwLzg8l3zqWNTo+r+wQeIH0uT4qF4EkyZ+vEJDh8PwNVjLDuR01zw1cvHAQIhAOta/wSwFV9a7+DdY5lt0fZvZucDaLlXD40owek6hcGhAiEA0I1YNse5k9SKuczTIeAyvqhHuxW6fXuPL82DH7Q082k
CIFgOS6utVdG/bFBthH47IHtbYty74cq2UBM4VJS2WKUBAiB/+OvTmZUnwHlr7+Ly25dn5O03QOsRyvsfMzWuA6+mWQIgct5xJglzcV1F6iRrOsdTRSBKfCC+XqXxsi21jfbFMEI=
publicKey:MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAL+74WvpIBmre97Od+Jci6cPpws2JMAP49igX7dkOP4ZwVjsvUsWUf1DoQs8JOu0ZTiUOJ8HGpDGG4KwBYBcPgkCAwEAAQ==
password:tZ9TkCWhUui0aodT8J3y+Z5oK8hnVU54opXM8JMnjn44EfqkgcsJmJn4LXetWQIfrKjLgPYzECxYAjKBVuDQPA==<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre></li>
<li><p>使用生成的加密密码替换配置中的数据库明文密码，并相应的在配置文件中定义公钥publicKey用以Druid对数据库名密码解密。</p>
</li>
<li><p>在application-dev.yml文件中进行Druid相关配置，参数相关解释，已经在备注中标注清楚，完整的配置：</p>
</li>
</ul>
<pre class="line-numbers language-yaml" data-language="yaml"><code class="language-yaml"><span class="token key atrule">spring</span><span class="token punctuation">:</span>
  <span class="token key atrule">datasource</span><span class="token punctuation">:</span>
    <span class="token key atrule">type</span><span class="token punctuation">:</span> com.alibaba.druid.pool.DruidDataSource
    <span class="token key atrule">druid</span><span class="token punctuation">:</span>
      <span class="token key atrule">driver-class-name</span><span class="token punctuation">:</span> com.mysql.cj.jdbc.Driver
      <span class="token key atrule">url</span><span class="token punctuation">:</span> jdbc<span class="token punctuation">:</span>mysql<span class="token punctuation">:</span>//localhost<span class="token punctuation">:</span>3306/snowadmin<span class="token punctuation">?</span>autoReconnect=true<span class="token important">&amp;characterEncoding=utf8&amp;useUnicode=true&amp;rewriteBatchedStatements=true&amp;serverTimezone=Asia/Shanghai</span>
      <span class="token key atrule">username</span><span class="token punctuation">:</span> root
      <span class="token key atrule">password</span><span class="token punctuation">:</span> tZ9TkCWhUui0aodT8J3y+Z5oK8hnVU54opXM8JMnjn44EfqkgcsJmJn4LXetWQIfrKjLgPYzECxYAjKBVuDQPA==
      <span class="token comment">#配置初始化连接数</span>
      <span class="token key atrule">initial-size</span><span class="token punctuation">:</span> <span class="token number">5</span>
      <span class="token comment">#最小空闲连接</span>
      <span class="token key atrule">min-idle</span><span class="token punctuation">:</span> <span class="token number">5</span>
      <span class="token comment">#最大连接数量</span>
      <span class="token key atrule">max-active</span><span class="token punctuation">:</span> <span class="token number">20</span>
      <span class="token comment">#获取连接超时的时间</span>
      <span class="token key atrule">max-wait</span><span class="token punctuation">:</span>  <span class="token number">60000</span>
      <span class="token comment">#配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒</span>
      <span class="token key atrule">time-between-eviction-runs-millis</span><span class="token punctuation">:</span> <span class="token number">60000</span>
      <span class="token comment">#配置一个连接在池中最小生存的时间，单位是毫秒</span>
      <span class="token key atrule">min-evictable-idle-time-millis</span><span class="token punctuation">:</span> <span class="token number">600000</span>
      <span class="token comment">#配置一个连接在池中最大生存的时间，单位是毫秒</span>
      <span class="token key atrule">max-evictable-idle-time-millis</span><span class="token punctuation">:</span> <span class="token number">1800000</span>
      <span class="token comment"># 指明连接是否被空闲连接回收器(如果有)进行检验.如果检测失败,则连接将被从池中去除,建议配置为true，不影响性能，并且保证安全性。</span>
      <span class="token comment"># 申请连接的时候检测，如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效。</span>
      <span class="token key atrule">test-while-idle</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
      <span class="token comment"># （慎用：配置为true会降低性能）申请连接时执行validationQuery检测连接是否有效，若无效则从池中去除连接并尝试取出另一个。</span>
      <span class="token key atrule">test-on-borrow</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
      <span class="token comment"># （慎用：配置为true会降低性能）归还连接时执行validationQuery检测连接是否有效。</span>
      <span class="token key atrule">test-on-return</span><span class="token punctuation">:</span> <span class="token boolean important">false</span>
      <span class="token comment"># 检测连接是否有效</span>
      <span class="token key atrule">validation-query</span><span class="token punctuation">:</span> select 1
      <span class="token key atrule">stat-view-servlet</span><span class="token punctuation">:</span>
        <span class="token comment"># 开启监控页面功能</span>
        <span class="token key atrule">enabled</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
        <span class="token comment"># 定义访问监控页面路径，默认为/druid</span>
        <span class="token key atrule">url-pattern</span><span class="token punctuation">:</span> /druid/*
        <span class="token comment"># 设置访问页面用户和密码</span>
        <span class="token key atrule">login-username</span><span class="token punctuation">:</span> admin
        <span class="token key atrule">login-password</span><span class="token punctuation">:</span> admin
        <span class="token comment"># 访问页面可以将统计数据重置清零，设为false关闭重置</span>
        <span class="token key atrule">reset-enable</span><span class="token punctuation">:</span> <span class="token boolean important">false</span>
      <span class="token key atrule">filter</span><span class="token punctuation">:</span>
        <span class="token key atrule">wall</span><span class="token punctuation">:</span>
          <span class="token comment"># 开启防SQL注入</span>
          <span class="token key atrule">enabled</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
          <span class="token comment"># 按照官方建议，项目最初可以对log-violation和throw-exception最如下配置，不影响项目运行使用，又可以查看SQL违规情况，稳定后去掉使用默认</span>
          <span class="token comment"># 对被认为是攻击的SQL进行LOG.error输出</span>
          <span class="token key atrule">log-violation</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
          <span class="token comment"># 对被认为是攻击的SQL不抛出异常</span>
          <span class="token key atrule">throw-exception</span><span class="token punctuation">:</span> <span class="token boolean important">false</span>
        <span class="token key atrule">stat</span><span class="token punctuation">:</span>
          <span class="token comment"># 开启统计监控信息</span>
          <span class="token key atrule">enabled</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
          <span class="token comment"># 记录慢SQL</span>
          <span class="token key atrule">log-slow-sql</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
          <span class="token comment"># SQL执行超过1秒即判为慢SQL</span>
          <span class="token key atrule">slow-sql-millis</span><span class="token punctuation">:</span> <span class="token number">1000</span>
          <span class="token comment"># 合并SQL</span>
          <span class="token key atrule">merge-sql</span><span class="token punctuation">:</span> <span class="token boolean important">true</span>
      <span class="token comment"># 定期保存Druid的监控记录到日志文件（设置该项&gt;0，即开启该功能）</span>
      <span class="token key atrule">time-between-log-stats-millis</span><span class="token punctuation">:</span> <span class="token number">300000</span>
      <span class="token key atrule">filters</span><span class="token punctuation">:</span> config
      <span class="token key atrule">connection-properties</span><span class="token punctuation">:</span> config.decrypt=true;config.decrypt.key=$<span class="token punctuation">{</span>public<span class="token punctuation">-</span>key<span class="token punctuation">}</span>;

<span class="token key atrule">public-key</span><span class="token punctuation">:</span> MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAL+74WvpIBmre97Od+Jci6cPpws2JMAP49igX7dkOP4ZwVjsvUsWUf1DoQs8JOu0ZTiUOJ8HGpDGG4KwBYBcPgkCAwEAAQ==<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>完整的项目POM文件内容：</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token prolog">&lt;?xml version="1.0" encoding="UTF-8"?&gt;</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>project</span> <span class="token attr-name">xmlns</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://maven.apache.org/POM/4.0.0<span class="token punctuation">"</span></span> <span class="token attr-name"><span class="token namespace">xmlns:</span>xsi</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://www.w3.org/2001/XMLSchema-instance<span class="token punctuation">"</span></span>
         <span class="token attr-name"><span class="token namespace">xsi:</span>schemaLocation</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>modelVersion</span><span class="token punctuation">&gt;</span></span>4.0.0<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>modelVersion</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>parent</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.springframework.boot<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>spring-boot-starter-parent<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>2.5.2<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>relativePath</span><span class="token punctuation">/&gt;</span></span> <span class="token comment">&lt;!-- lookup parent from repository --&gt;</span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>parent</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>com.snow.dcl<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>Snow_Admin<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>0.0.1-SNAPSHOT<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>name</span><span class="token punctuation">&gt;</span></span>Snow_Admin<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>name</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>description</span><span class="token punctuation">&gt;</span></span>Admin project for Spring Boot<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>description</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>properties</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>project.build.sourceEncoding</span><span class="token punctuation">&gt;</span></span>UTF-8<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>project.build.sourceEncoding</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>project.reporting.outputEncoding</span><span class="token punctuation">&gt;</span></span>UTF-8<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>project.reporting.outputEncoding</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>java.version</span><span class="token punctuation">&gt;</span></span>11<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>java.version</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>druid.version</span><span class="token punctuation">&gt;</span></span>1.1.24<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>druid.version</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>properties</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencies</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.springframework.boot<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span>
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            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>optional</span><span class="token punctuation">&gt;</span></span>true<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>optional</span><span class="token punctuation">&gt;</span></span>
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<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>project</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h3 id="启动"><a href="#启动" class="headerlink" title="启动"></a>启动</h3><p>运行项目启动类，启动成功后，可以访问Druid的Web监控页面：<a target="_blank" rel="noopener" href="http://localhost:8080/druid/login.html%E3%80%82">http://localhost:8080/druid/login.html。</a></p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/10.png" alt="10"></p>
<p>输入配置的用户名和密码进行登录。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/11.png" alt="11"></p>
<p>点击数据源可以查看到配置文件中配置的各项参数。</p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/12.png" alt="12"></p>
<p>在项目中创建controller、dao、model、service等开发使用的包，在controller包下创建一个测试接口文件TestController.java，编写如下代码：</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RestController</span>
<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">TestController</span> <span class="token punctuation">{</span>
    <span class="token annotation punctuation">@GetMapping</span><span class="token punctuation">(</span><span class="token string">"/test"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span> <span class="token class-name">String</span> <span class="token function">test</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token string">"hello"</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>项目会自动热重启，访问接口路径：<a target="_blank" rel="noopener" href="http://localhost:8080/test%E3%80%82">http://localhost:8080/test。</a></p>
<p><img src="/Dcl_Snow/2021/08/10/xiang-mu-chu-shi-hua/t1.png" alt="t1"></p>
<p>访问成功，至此项目初始化完成。</p>

                
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